Laboratory cases and MCQ for immunity

During LDH assay, a rapid decrease in NADH absorbance is observed. This indicates:

In the CK-MB assay using antibody inhibition, which of the following remains measurable after inhibition?

What is the role of immobilized anti-cTnI antibodies on the test line?

Which of the following cell plays a crucial role in antibody-dependent cell cytotoxicity?

Which of the following immune cells are not derived from lymphoid progenitor cells?

Which of the following interaction favors T cell activation?

The earliest immunoglobulin to be synthesized by the fetus is :

Which of the following statements is true about hapten ?

A woman with infertility receives an ovary transplant from her sister who is an identical twin. What type of graft it is ?

Adenosine deaminase deficiency is seen in the following :

The serum concentration of which of the following human IgG subclass is maximum :

Lysozyme is an enzyme present in the tears and mucous secretion that cleaves

Which of the following is not an example of innate immunity?

Which type of immunity develops after exposure to specific antigens?

How do regulatory T cells (Tregs) contribute to transplant tolerance?

Which mechanism is involved in antibody-mediated rejection (AMR) of transplants?

What is the purpose of a crossmatch test before organ transplantation?

How do tumor-associated macrophages (TAMs) typically contribute to tumor growth and progression?

What is the concept of immunoediting in cancer development?

What is the consequence of MHC class I downregulation in tumor cells?